LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Crank Pulley Wobbling bad!

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Old Jul 28, 2003 | 09:28 PM
  #1  
ixd97z28's Avatar
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Crank Pulley Wobbling bad!

Hey guys, I started my car up today and between 1k to 2.5k RPM accellerating at idle I heard like a slip on my accessorie belt, but everything was fine. So I drove to work, no problem. Left to work to go pickup my roomate, everything ran good. Picked my roomate and was driving home when all of a sudden my PowerSteering went out and my Check Gauges light came on. I immediately pulled over to the side, but the Check Gauges light went off, and my PS came back.

When I got the car parked, opened the hood and letting it idle the crank pulley was wobbling really bad, nothing that looked good. I assume there is something wrong with the crank pulley...would there be anything else that could cause a wobble like this? Also, is it hurting my motor to wobble that bad?

Thanks in advance guys!
Dan

PS. anyone got the GM part # for a new pulley?
Old Jul 28, 2003 | 09:33 PM
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Three bolts hold it on. I would be checking them. Don't drive it like that.

GM PART # 12551138 if you need it. It ain't cheap.

I hope it is the pulley and not the hub.

Last edited by shoebox; Jul 28, 2003 at 09:36 PM.
Old Jul 28, 2003 | 09:35 PM
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Originally posted by shoebox
Three bolts hold it on. I would be checking them.

GM PART # 12551138 if you need it. It ain't cheap.
Thanks Rob!

EDIT: 12551138 is prolly for the whole assembly correct? Or just the pulley?
Old Jul 28, 2003 | 09:41 PM
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Originally posted by ixd97z28
Thanks Rob!

EDIT: 12551138 is prolly for the whole assembly correct? Or just the pulley?
Just the pulley. The hub is another part.
Old Jul 28, 2003 | 09:53 PM
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ixd97z28's Avatar
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Originally posted by shoebox
Just the pulley. The hub is another part.
It says something about balancer but I'm pretty sure the balancer is a different part, would that cause wobbling at all?
Old Jul 28, 2003 | 10:11 PM
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Originally posted by ixd97z28
It says something about balancer but I'm pretty sure the balancer is a different part, would that cause wobbling at all?
Pulley...balancer... different names for the same thing.
Old Jul 29, 2003 | 01:14 AM
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Originally posted by shoebox
Pulley...balancer... different names for the same thing.
Thanks Rob! let me know when you're in vegas so I can buy you a beer

Dan
Old Jul 29, 2003 | 01:40 AM
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Its gonna grind your opti. Its only a few milimeters from the pulley.
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